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Bruce Lancaster · 04-24-2013, 10:42 AM

On the Ford...Southern California is probably best place for blocked risers; you'll never be drowning your car with the choke on an icy morning!
All effects, good and potential bad, will be considerably less with a stock iron manifold than with aluminum.
Partial blockage...on later carbureted SBC's, some had iron and some aluminum manifolds. Heat was used for waring manifold, of course, but also served a stove for choke tube on some. Gasket sets for aluminum came with shim stock partial blockoffs...I think exhaust hole on these was circa 1/4" from memory.
Olds guy...you are being sold a CROCK. Your engine will run fine completely stock on unleaded with any random modern oil you find, though I would think about the oil issues IF putting a new cam and lifters in there.
Your problem areas, if you have any, will be limited to rubber carb parts (Try adapting accel pump cap from a late Rochester or such...there are specialists to help!) and fuel pump diaphragm, MAYBE. On the fuel pump IF you have probs, throw in an electric modern one and forgetaboutit.
New engine, hardened valve seats, oil no good for old engines, gotta have super-duper heads: CROCK. Put your wallet back in your pocket and RUN from that mechanic!

04-24-2013, 10:42 AM	#33
Bruce Lancaster Member Emeritus Join Date: May 2010 Location: Madison, NJ Posts: 5,230	Re: Blocking Off Heat Risers On the Ford...Southern California is probably best place for blocked risers; you'll never be drowning your car with the choke on an icy morning! All effects, good and potential bad, will be considerably less with a stock iron manifold than with aluminum. Partial blockage...on later carbureted SBC's, some had iron and some aluminum manifolds. Heat was used for waring manifold, of course, but also served a stove for choke tube on some. Gasket sets for aluminum came with shim stock partial blockoffs...I think exhaust hole on these was circa 1/4" from memory. Olds guy...you are being sold a CROCK. Your engine will run fine completely stock on unleaded with any random modern oil you find, though I would think about the oil issues IF putting a new cam and lifters in there. Your problem areas, if you have any, will be limited to rubber carb parts (Try adapting accel pump cap from a late Rochester or such...there are specialists to help!) and fuel pump diaphragm, MAYBE. On the fuel pump IF you have probs, throw in an electric modern one and forgetaboutit. New engine, hardened valve seats, oil no good for old engines, gotta have super-duper heads: CROCK. Put your wallet back in your pocket and RUN from that mechanic!